单项选择题

I don't think you have heard of the story before you knew Peter,__________

A．don't I
B．haven't you
C．do I
D．have you
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单项选择题
It does harm to children's growing up healthily to _________the Internet and computer games.
A．take in
B．take on
C．take off
D．take to
单项选择题
Some people are in favor of developing private cars. However, others strongly object _________it.
A．against
B．for
C．to
D．with
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